Sliding screen door

ABSTRACT

A lateral pull wire screen with a net attached, between a first longitudinal frame member in a wire screen frame and a movable frame for an opening/closing operation, to be openable/closable by a lateral pull; a net guide guiding the lower end of the net goes in and out in compliance with the opening/closing of the net. The left/right convenience in the net opening/closing can be altered by the first longitudinal frame member and the movable frame, together with the net attached between them, having substantially upside/downside symmetrical shapes, and reversing them in their upsides/downsides without reversing their fronts and backs. Also, the net guide can be altered in its attachment position by, upon the upside/downside reversions, selectively attaching the net guide to attachment parts provided in both ends of the first longitudinal frame member fixing one end of the net guide.

TECHNICAL FIELD

The present invention is relating to a wire screen in which a net ismade openable/closable by a lateral pull and, more concretely, isrelating to a lateral pull wire screen having a net guide introduced outalong a lower end of the net in compliance with an opening/closing ofthe net.

BACKGROUND ART

The lateral pull wire screen in which the net is made openable/closableby the lateral pull, and which has the flexible net guide introduced outalong the lower end of the ret in compliance with the opening/closing ofthe net, is hitherto publicly known as disclosed in Patent Document 1for instance.

Further, a wire screen which has a wire screen frame fixed to a buildingopening part, a net attached in the wire screen frame so as to beopenable/closable by the lateral pull, and a winding box accommodatingthe net, and in which a longitudinal frame member of the wire screenframe is constituted by the winding box, is hitherto publicly known asdisclosed in Patent Document 2 for instance.

Additionally, in a case where a left/right convenience of the lateralpull wire screen is altered while being coincided with a door of thebuilding opening part, or the like, from olden times there is known thefact that the wire screen is reversed in its upside and downside withits front and back being kept intact, or that the wire screen isreversed in its front and back with its upside and downside being keptintact.

In the lateral pull wire screen having the net guide, which is disclosedin the Patent Document 1, since the net guide guiding a lower end of thenet under its stretched state goes in and out to and from an inside of amovable frame from its lower end, there is a convenience in a point thatunderfoot there is no thing becoming a hindrance of walking when goingin and out to and from the building opening part. However, whenselecting or altering the left/right convenience while being coincidedwith the door of the building opening part, since structures of an upperpart and a lower part of the wire screen differ, it is impossible toalter the left/right convenience by reversing the wire screen in itsupside and downside and, therefore, it is necessary to alter theleft/right convenience by reversing the wire screen in its front andback.

Further, since the lateral pull wire screen disclosed in the PatentDocument 1 is a wire screen in which a stretchable net alternatelyfolded back in reverse directions is made openable/closable by thelateral pull, it is also possible to alter the left/right convenience bymaking the longitudinal frame member or the movable frame, whichconstitutes the wire screen frame, into a front/back symmetrical shapein an external appearance, and reversing the wire screen in its frontand back without reversing its upside and downside. However, since eachpart is made into the front/back symmetrical shape in the externalappearance, there is also the fact that a useless cost must be spentbecause there is a necessity to apply a makeup to its front-back bothfaces and, further, there is also the fact that a compatibility betweenit and an attachment structure for attaching the wire screen to thebuilding opening part is difficult.

On the other hand, since the lateral pull wire screen disclosed in thePatent Document 2 is a lateral pull wire screen of a type in which thenet is wound around a winding shaft accommodated in the winding box andit is difficult to make the winding box into the front/back symmetricalshape in the external appearance, there has been an issue that theleft/right convenience cannot be altered by reversing the wire screen inits front and back. If the whole wire screen including the winding boxand the wire screen frame is forcedly made into the front/backsymmetrical shape in the external appearance, it is possible to alterthe left/right convenience by reversing the whole wire screen in itsfront and back. However, in that case, it is necessary to make the wholeof the wire screen frame into the same prospective dimension as thewinding box, so that there has been an issue that the prospectivedimension becomes large as a whole. Further, if the net guide guidingthe lower end of the net is provided so as to go in and out to and fromthe inner part of the movable frame or the like from its lower end,since the structures of the upper part and the lower part of the wirescreen differ, there has been an issue that it is also impossible toalter the left/right convenience by reversing the wire screen in itsupside and downside

Patent Document 1: JP-A-2003-201796 Gazette

Patent Document 2: JP-A-2003-106076 Gazette

DISCLOSURE OF THE INVENTION

Problems that the Invention is to Solve

The invention is to solve such issues as mentioned above, and itstechnical problem is provide a lateral pull wire screen in which it ispossible to alter the left/right convenience, notwithstanding the factthat it is the lateral pull wire screen having the net guide introducedout along the lower end of the net in compliance with theopening/closing of the net.

Further, the invention is to provide a lateral pull wire screen in whichit is possible to alter the left/right convenience without enlarging theprospective dimension of the whole wire screen, notwithstanding the factthat it is the lateral pull wire screen having the winding box.

Means for Solving the Problems

In order to solve the above problems, the invention is a lateral pullwire screen in which a wire screen frame fixed to a building openingpart has first and second longitudinal frame members disposed inmutually opposed positions, and a lateral frame member in an upper part,and in which between the first longitudinal frame member in the wirescreen frame and a movable frame for an opening/closing operation thereis attached a net so as to be openable/closable by a lateral pull, andwhich has a net guide made such that its one end is fixed to a lower endof one of the first longitudinal frame member and the movable frame, theother end goes in and out to and from an inside from a lower end of theother of the same while being bent in compliance with an opening/closingof the net by the lateral pull of the movable frame, and it guides alower end of the net under a stretched state, characterized in that aleft/right convenience in a net opening/closing can be altered byforming the first longitudinal frame member and the movable frame,together with the net attached between them, substantiallyupside/downside symmetrical shapes to be reversed in their upsides anddownsides without reversing them in their fronts and backs, forming thesecond longitudinal frame member substantially an upside/downsidesymmetrical shape or a front/bank symmetrical shape, and forming thelateral frame member substantially a front/back symmetrical shaper or ina manner such that to its both ends the first and second longitudinalframe members can be selectively connected, and the net guide is madesubstantially a front/back symmetrical shape, and an attachment partselectively attaching the net guide is provided in both ends of thefirst longitudinal frame member fixing the one end of the net guide orthe movable frame.

In a desirable implementation mode of the lateral pull wire screen ofthe invention, the first longitudinal frame member in the wire screenframe, the movable frame and the net attached between them areconstituted as a wire screen main body capable of treating themmonolithically, and, by making them substantially upside/downsidesymmetrical shapes and reversing their upsides and downsides withoutreversing their fronts and backs, it is made possible to alter theleft/right convenience in the opening/closing of the net. On the otherhand, the second longitudinal frame member, the lateral frame member andthe net guide are made substantially front/back symmetrical shapes, andused with their fronts and backs being reversed in compliance with anecessity. And, by fixing one end of the net guide so as to bepositioned in a lower end of the first longitudinal frame member, itbecomes possible to simply alter the left/right convenience in theopening/closing of the lateral pull wire screen.

In other desirable implementation mode of the invention, one of thefirst longitudinal frame member and the movable frame is constituted asa winding box having possessed a winding shaft which winds the net by abiasing force of a spring, and further the movable frame has a movableframe main body of an upside/downside symmetrical shape, a frame cap inan upper part and a frame cap in a lower part, which can be selectivelyattached to both-end parts of the movable frame main body, and a lockmechanism attached to the movable frame main body so as to be capable ofadjusting upside and downside positions, and engaging with the secondlongitudinal frame member, and the frame cap in the upper part possessesa guide mechanism guided by the lateral frame member, and the frame capin the lower part is constituted as one possessing a bend guide causingthe net guide to go in and out to and from the movable frame main bodywhile being bent.

Additionally, in other desirable implementation mode of the invention,the net guide is constituted by connecting many guide pieces made of asynthetic resin, which is formed, in approximately like a U-letter, bybottom parts along a lower end of the net and standing wall parts whichstand up along an outer face of the net. An attachment part in the guidepiece of a base end side in the guide pieces under a connected state canbe constituted as an engagement structure capable of detachably engagingwith engagement parts provided in caps of an upper end part and a lowerend part of the winding box.

Further, the lock mechanism has a lock part piece which is provided inthe movable frame, slidable upward/downward in a lock cover andautomatically engages with a lock receiver of the second longitudinalframe member when being butted against the second longitudinal framemember, and one pair of inside and outside operation knobs connected tothe lock part piece, and the lock cover, the lock part piece and theoperation knobs, which are provided in the movable frame, and the lockreceiver provided in the second longitudinal frame member areconstituted so as to be respectively adjustable for upside and downsidepositions, and to function with their upsides and downsides beingreversed.

Incidentally, here, the fact that, about the frame member or the like,there is explained as substantially the upside/downside symmetricalshape or the front/back symmetrical shape does not mean the fact that itis precisely the symmetrical shape while including also an internalstructure, but does mean a constitution which is symmetrical when seenin an external appearance or functionally, and can be used even under areversed state.

In the lateral pull wire screen having the above constitution, since thewire screen main body which is constituted by the first longitudinalframe member in the wire screen frame, the movable frame and the netattached between them is substantially the upside/downside symmetricalshape and makes it possible to alter the left/right convenience in theopening/closing of the net by reversing them in their upsides anddownsides without reversing them in their fronts and backs, it can beused by reversing the second longitudinal frame member, the lateralframe member and the net guide in their fronts and backs, as necessary.And, by fixing one end of the net guide so as to be positioned in alower end of one end part of the first longitudinal frame member or themovable frame and causing it to go in and out to and from the insidefrom the other lower end of the same while being bent, the left/rightconvenience in the opening/closing of the lateral pull wire screen carbe arbitrarily set or simply altered without applying a special working.

Further, since the frame caps in the upper part and the lower part canbe selectively attached to the both-end parts of the movable frame mainbody and the lock mechanism is adjustable for the upside and downsidepositions, by suitably mounting these members, the lateral pull wirescreen can be used without any hindrance even if its left/rightconvenience is altered.

Advantage of the Invention

According to the lateral pull wire screen of the invention, which hasbeen detailedly mentioned above, notwithstanding the fact that it is thelateral pull wire screen having the net guide introduced out along thelower end of the net in compliance with the opening/closing of the net,it is possible to alter the left/right convenience and, further even ifit is the lateral pull wire screen having the winding box, it ispossible to alter the left/right convenience without enlarging theprospective dimension of the whole wire screen frame.

BRIEF DESCRIPTION OF THE DRAWINGS

[FIG. 1] It is a front view showing one embodiment of a lateral pullwire screen concerned with the invention.

[FIG. 2] It is a plan view of the same.

[FIG. 3] It is a side view of the same.

[FIG. 4] It is a front view showing a disassembled state of the lateralpull wire screen concerned with the invention.

[FIG. 5] It is a disassembled plan view showing a structure of anattachment part attaching/detaching a net guide to/from a firstlongitudinal frame member.

[FIG. 6] It is a view seen along an A-A arrow line in FIG. 5.

[FIG. 7] It is a sectional view of a second longitudinal frame member inFIG. 2.

[FIG. 8] It is a partial side view showing a state in which a lockreceiver is attached to the second longitudinal frame member.

[FIG. 9] It is a sectional view of a movable frame main body.

[FIG. 10] It is a partial enlarged side view showing a state in which alock mechanism is attached to the frame main body.

[FIG. 11] It is a partial plan sectional view showing a state in whichthe lock mechanism attached to the movable frame main body engages withthe lock receiver attached to the second longitudinal frame member.

[FIG. 12] It is a partial side sectional view of the same.

DESCRIPTION OF REFERENCE NUMERALS

1 wire screen frame

2 first longitudinal frame member

2 a gap

3 second longitudinal frame member

4 lateral frame member

5 movable frame

5 a movable frame main body

5 b upper part frame cap

5 c lower part frame cap

6 net

8 winding shaft

10 net guide

11 guide piece

19 attachment part

21 lock mechanism

22 lock receiver

25 lock cover

26 lock part piece

27, 28 knob

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1-FIG. 4 show one embodiment of a lateral pull wire screenconcerned with the invention.

As shown in FIG. 1, this lateral pull wire screen possesses a wirescreen frame 1 fixed to a building opening part. This wire screen frame1 has a first longitudinal frame member 2 and a second longitudinalframe member 3, which are disposed in mutually opposed both-sidepositions of the building opening part, and a lateral frame member 4 inan upper part. Further, between the first longitudinal frame member 2and the second longitudinal frame member 3, there is provided a movableframe 5 for an opening/closing operation, which moves left and rightwhile being guided by the lateral frame member 4 in the upper part and,between the first longitudinal frame member 2 in the wire screen frame 1and the movable frame 5, there is attached a net 6 which isopenable/closable by the lateral pull. Additionally, there is possesseda flexible net guide 10 which goes in and out to and from an inside ofthe movable frame 5 from its lower end in compliance with anopening/closing of the net 6, thereby guiding a lower end of the net 6under its stretched state.

In this embodiment, although the first longitudinal frame member 2 isconstituted as a winding box accommodating a winding shaft 8 aroundwhich the flat net 6 is wound by a biasing force of a spring, it is alsopossible to accommodate the winding shaft in the movable frame 5 andconstitute it as the winding box. Additionally, it is also possible totension-provide, between the first longitudinal frame member and themovable frame 5, a net, which is made expandable like an accordion bybeing mutually folded back in reverse directions, so as to beopenable/closable. Further in the above embodiment, although there isconstituted such that one end of the net guide 10 is fixed to a lowerend of the first longitudinal frame member 2 and the other end goes inand out to and from the inside of the movable frame 5 from its lowerend, especially in a case where the above net like the accordion isused, it is also possible to constitute it such that one end of the netguide 10 is fixed to the lower end of the movable frame 5 and the otherend goes in and out to and from the inside of the first longitudinalframe member 2 from its lower end.

On the other hand, the second longitudinal frame member 3 is constitutedas a receiving frame which retains the movable frame 5 when the net 6 istension-provided in the wire screen frame 1 by the movable frame 5.

As shown in FIG. 2, although the above lateral pull wire screen isdisposed outside of a shoji (sliding paper screen) 16 provided in thebuilding opening part, even if it is disposed inside or outside of room,the first longitudinal frame member 2 constituting the above winding boxis not symmetrical shape in its front/back face side and, moreover,normally the prospective dimension becomes larger than the secondlongitudinal frame member 3 and the lateral frame member 4, so that itprotrudes to an outside.

Thereupon, by constituting the first longitudinal frame member 2 and themovable frame 5 as a wire screen main body capable of beingmonolithically treated together with the net 6 attached between them,making it into substantially an upside/downside symmetrical shape, andreversing it in its upside and downside without reversing it in itsfront and back, there is constituted such that, even if there is aprotrusion portion to the outside, the left/right convenience in theopening/closing of the net 6 can be altered.

As shown in FIG. 2, the longitudinal frame member 2 constituting thewire screen main body is fixed to a building opening part frame 15through an attachment 18 (refer to FIG. 2, FIG. 4) for attaching, whichis fixed to the building opening part frame 15 by screws 9. Thisfixation of the longitudinal frame member 2 is performed by detachablyengaging protrusion parts 2 b provided in insides of both-side walls ofthe first longitudinal frame member 2 with hook parts 18 a in standingwall outer faces of the attachment 18. It is desirable that theattachment 18 forms a symmetrical shape in regard to a center face in alengthwise direction passing its center.

Although there is made such that the wire screen frame 1 is fixed to thebuilding opening part frame 15 by the screws 9, it is also possible tofix it by butting a back face of the wire screen frame 1 against aperipheral frame of the building opening part.

As understood from FIG. 1, FIG. 4, the first longitudinal frame member 2constituting the above winding box is substantially an upside/downsidesymmetrical shape. Further, although there is schematically shown in thedrawing, in its inside there is accommodated the winding shaft 8, towhich an end part of the net 6 is attached, while being rotatablysupported. In the winding shaft 8, there is constituted such that arotation biasing force by a twist of a coil spring accommodated in aninside of the winding shaft is made a drive source for a net winding bythe winding shaft 8, and there is made such that the net 6 can beretained under a tension-provided state by causing a lock part piece 26of a lock mechanism 21 provided in the movable frame 5 to engage with alock receiver 22 provided in the longitudinal frame member 2 at atension-provided time of the net 6.

Further, as shown in FIG. 1-FIG. 4, to an upper end part and a lower endpart of the first longitudinal frame member 2 constituting the windingbox, there are attached respective caps 2 a and, as shown in FIG. 5 andFIG. 6, in the cap 2 a there is provided an attachment part 19 forselectively attaching a base end of the net guide 10.

The second longitudinal frame member 3 constituted as a reception frameis formed, as shown in FIG. 7, substantially as a symmetrical shape inits front/back side (left/right in the same drawing) in the wire screenframe 1, whose upper end is connected to the lateral frame member 4 asunderstood from FIG. 1 and FIG. 4, and in which there is provided thelock receiver 22 adjustable for a position in which the later-mentionedflock part piece 26 of the lock mechanism 21 engages. Therefor, there ismade such that, on an occasion of the alteration of the left/rightconvenience in the opening/closing of the net 6, it is fixed to a sideopposite to the building opening part by reversing it in its front andback without reversing it in is upside and downside. However, if it ismade the upside/downside symmetrical shape and caused to have aconstitution capable of being connected to the lateral frame member 4 byreversing it in its upside and downside, it is unnecessary to considerits upside/downside and front/back when attaching it to the buildingopening part and, if there is used later-mentioned upside/downsidesymmetrical one as the lock receiver 22 of the lock mechanism 21, theresuffices if there is considered only its upside/downside position. Bythis, not only at a installation time of the lateral pull wire screenbut also in a case changing the light/left convenience in theopening/closing of the net 6, it can be attached while being suitablyreversed.

As understood from FIG. 7, the second longitudinal frame member 3 has,in an opposed face side to the movable frame 5, a groove 3 a extendingin the lengthwise direction, and one pair of protruded walls 3 bprotruding on the inside in an opening part of the groove 3 a. About anattachment structure of the lock receiver 22 in regard to the secondlongitudinal frame member 3 having the groove 3 a, there is mentionedlater.

As shown in FIG. 3, the lateral frame member 4 has substantially thefront/back symmetrical shape, is fixed to the building opening partframe 15 by the screw 9, is formed with a groove-like portion openingdownward and guides end parts of the net 6 and the movable frame 5 bythe groove-like portion. One pair of guide faces 4 a for rotatingrollers 20 constituting a guide mechanism provided in the movable frame5 are provided in an inside of the lateral frame member 4.

Further, in its lower end mouth part, there is provided a brush-likeslide contact member (mohair) 4 b contacting with a surface of the net 6to thereby prevent an insect's invasion.

The lateral frame member 4 may be made such that to its both ends therecan be selectively connected the first and second longitudinal framemembers 2, 3 and, in that case, it is unnecessary to make it thefront/back symmetrical shape.

As shown in FIG. 1, FIG. 2 and FIG. 4, the movable frame 5 has a movableframe main body 5 a of the upside/downside symmetrical shape to whichone end of the net 6 is attached, frame caps 5 b, 5 c attachable to anddetachable from an upper part and a lower part of the movable frame mainbody 5 a, and a lock mechanism 21 attached to an approximately centerpart of the movable frame main body 5 a and having the lock part piece26 (refer to FIG. 12) engaging with and disengaging from the lockreceiver 22 of the second longitudinal frame member 3. The movable framemain body 5 a has such a sectional shape as shown in FIG. 9, andconcretely has an attachment piece insertion groove 5 d in thelengthwise direction, into which a long plate-like attachment piece 6 a(refer to FIG. 2) provided in one end of the net 6 is inserted and amounting groove 5 e which extends in the lengthwise direction, formounting the lock mechanism 21. In its inside, there is formed anaccommodation space 13 into which the net guide 10 explained below isintroduced. The mounting groove 5 e is formed by a bottom wall 5 fextending in the lengthwise direction, and side walls 5 g in both sidesof the bottom wall 5 f.

Furthers in the frame cap 5 b in the upper part, there are possessed therotatable rollers 20 (FIG. 3) as the guide mechanism, which are guidedby the guide faces 4 a of the lateral frame member 4, and, in the framecap 5 c in the lower part, there is provided a bend guide 14 (FIG. 1)for causing the net guide 10 explained below to go in and out to andfrom the accommodation space 13 in the movable frame main body 5 a whilebeing bent.

Since the movable frame main body 5 a and the first longitudinal framemember 2 are mutually connected through the net 6, a wire screen mainbody constituted by them can be monolithically treated. Furthers sincethese members are the upside/downside symmetrical shapes except thedetachable upper and lower frame caps 5 a, 5 c in the movable frame 5,the wire screen main body is formed also in the upside/downsidesymmetrical shape with exchanges of the upper and lower caps 5 b, 5 c ofthe movable frame.

As shown in FIG. 1-FIG. 6, the net guide 10 possesses many guide pieces11 made of a synthetic resin, which are formed in an approximatelyU-shape by bottom parts 11 a along the lower end of the net 6 andstanding wall parts 11 b which stand up along front/back both outerfaces of the net, and the many guide pieces 11 are flexibly connected ina bend direction shown in FIG. 1 by inserting one wire 12 having astretchability through connection holes 11 c provided in centers of thebottom parts 11 a. Additionally, as shown in FIG. 3, in a bottom partside of the guide piece 11, there is provided a groove 11 d fitted to along plane-like guide rail 17 refer to FIG. 3, FIG. 4) of a height of adegree not becoming a hindrance of walking, which has been attached to afloor face of the building opening part, and the net guide 10 is causedto suitably slide on the guide rail 17, thereby making a stableopening/closing of the net 6 possible.

Further, in the guide piece 11 at least in a most base end side of theguide pieces 11 under a connected state, engagement protrusions 11 e areprovided in its both-side outer faces. The engagement protrusions 11 eare detachably engaged with the attachment part 19 having engagementpart pieces 19 a respectively, perpendicularly provided in the cap 2 ain the first longitudinal frame member 2 and, by these, there isconstituted such that a base end of the net guide 10 can be selectivelyconnected to both ends of the first longitudinal frame member 2.

More concretely, as shown in FIG. 4-FIG. 6, the engagement part piece 19a is one in which its one pair protrude to a net guide 10 side from thecap 2 a, and engagement grooves 19 b with which the engagementprotrusions 11 e of the guide piece 11 engage are provided in the onepair of engagement part pieces 19 a to which the guide piece 11 in themost base end side is inserted.

By the above-mentioned constitution, the net guide 10 and the guidepiece 11 constituting the net guide 10 are ones in which its front/back(left/right in FIG. 3) has substantially the symmetrical shape.

Incidentally, in a case where a base end of the net guide 10 is fixed tothe movable frame 5, it follows that, in the frame caps 5 b, 5 c of bothends in the movable frame 5, there is provided the attachment part 19 ofthe above-mentioned structure, which selectively attaches the net guide10.

Next, there is explained about the lock mechanism 21 provided betweenthe second longitudinal frame member 3 and the movable frame 5.

As shown in FIG. 8 and FIG. 12, in the second longitudinal frame member3, there is made such that the lock receiver 22 can be fixed so as to beadjustable for its position along the groove 3 a formed in an opposedface side to the movable frame 5. The lock receiver 22 is larger in itslateral width than an opening width of the groove 3 a. Further, afixation fitment 22 b in the groove 3 a, to which a fixation screw 22 cis mesh-inserted through a main body part 22 a of the lock receiver 22,is larger in its lateral width than an opening width between the onepair of protruded walls 3 b provided in the opening part of the groove 3a. Therefor, by the fixation screw 22 c, the main body part 22 a of thelock receiver 22 and the fixation fitment 22 b are fastened tightlywhile nipping the one pair of protruded walls 3 b and, therefore thelock receiver 22 can be fixed to an arbitrary position along the groove3 a. As shown in FIG. 12, the main body part 22 a of the lock receiver22 has, in its upper and lower parts, slant faces 22 d guiding anengagement of the lock part piece 26, and in its back, an engagementpart 22 e with which the lock part piece 26 engages.

On the other hand, as shown in FIG. 10-FIG. 12, the lock mechanism 21provided in the movable frame main body 5 a has a lock cover 25 attachedby screws 31 to the bottom wall 5 f of the mounting groove 5 e of themovable frame main body 5 a, a lock part piece 26 which is disposed inthe lock cover 25 so as to be slidable upward and downward, and whichengages with and disengages from the lock receiver 22, and one pair ofoperation knobs 27, 28 in inner and outer sides connected to the lockpart piece 26.

The operation knob 27 has a knob part 27 a, and a shaft part 27 bmonolithically provided in the knob part 27 a. The shaft part 27 b isinserted into the mounting groove 5 e through a long hole 5 h providedin the side wall 5 g of the movable frame main body 5 a and, in aportion inserted into the mounting groove 5 e, there is provided a fithole 27 c to which a fixation part 26 c of the lock part piece 26 isfitted. By a fixation screw 29 mesh-inserted through the other operationknob 28, the operation knob 28 is fixed to a tip of the shaft part 27 bin the operation knob 27 and, at the same time, the fixation part 26 cof the lock part piece 26 can be fixed into the fit hole 27 c of theshaft part 27 b.

The operation knobs 27, 28, and the lock part piece 26, which are fixedin this manner, are mounted such that, for the engagement/disengagementin regard to the lock receiver 22 of the lock part piece, the shaft part27 b of the knob part 27 a can move in upward and downward directionsalong the one pair of long holes 5 h provided in the side wall 5 g ofthe movable frame main body 5 a.

The lock cover 25 has one pair of upper and lower position regulationparts 25 a regulating an ascent position and a descent position of thelock part piece 26, and one pair of left and right connection walls 25 bconnecting the one pair of position regulation parts 25 a. In a centerpart of the connection walls 25 b, there is formed a guide groove 25 cslidably guiding the lock part piece 26 in upward and downwarddirections.

Further, as shown in FIG. 12, the lock part piece 26 has, in its upperand lower parts, a slant face 26 d opposing to the slant face 22 d ofthe lock receiver 22, and in its back, an engagement part 26 e engagingwith the lock receiver 22, and forms the upside/downside symmetricalshape.

In the lock mechanism 21 having the above constitution, if the movableframe 5 is moved till a position butting against the second longitudinalframe member 3, since the lock part piece 26 climbs over the slant face22 d of the lock receiver 22 while resisting against a gravity, theengagement part 26 e of the lock part piece 26 automatically engageswith the engagement part 22 e in the lock receiver 22 as shown in FIG.12. On the other hand, if the lock part piece 26 is ascended byoperating the operation knob 27 or 28, since the lock part piece 26 islifted till it climbs over an uppermost end of the lock receiver 22, itis possible to release an engagement between the lock part piece 26 andthe lock receiver 22.

In the lock mechanism 21 of the above embodiment, since in the sidewalls 5 g of the movable frame main body 5 a, there are provided onepair of long holes 5 h in which the shaft part 27 b of the knob part 27a moves in upward and downward directions, when installing this wirescreen it is necessary to previously provide the long holes 5 h in asuitable installation position of the lock mechanism 21. However, in acase where a position, in which the long hole 5 h is open-provided, isunsuitable, it is necessary to open-provide again the long hole in anecessary position while leaving an unnecessary hole trail. In order toavoid such an issue, there suffices if there is adopted such aconstitution that the long hole 5 h for the shaft part 27 b of the knobpart 27 a is made unnecessary, e.g., such a constitution that there isprovided a knob part protruding to an outside along the side wall 5 gfrom the inside of the mounting groove 5 e of the movable frame mainbody 5 a.

Further, in a case where the left/right convenience in theopening/closing of the wire screen installed already is altered, itthere is no issue in its upside and downside positions, although thefirst longitudinal frame member 2 and the net 6 are reversed bydetaching the movable frame 5 from the net 6, by fixing the movableframe 5 to the end part of the net 6 with its front and back beingreversed while keeping its downside posture intact, it is possible toalter the left/right convenience in the net opening/closing by utilizingintact the long hole 57 initially open-provided. In this case, the factthat the movable frame having the lock mechanism 21 including the lockcover 25, the lock part piece 26 and the operation knobs 27, 28, and thesecond longitudinal frame member 3 having the lock receiver 22 aresubstantially, respectively the front/back symmetrical shapes, iseffective for preventing especial hindrance from occurring by thealteration of the left/right convenience.

Additionally, since the lock mechanism 21 and the lock receiver 22 aremade the upside/downside symmetrical shapes and thus made so as to becapable of being used even if their upsides and downsides are reversed,it is unnecessary to consider the upside and the downsides wheninstalling them. Further, in cooperation with the fact that they are thesymmetrical shapes also in their front and back sides, they are highlyconvenient for their attachments, and the like.

In the lateral pull wire screen having the above constitution, since thewire screen main body comprising the first longitudinal frame member 2and the movable frame 5 in the wire screen frame 1 and the net 6attached between them is substantially the upside/downside symmetricalshape, it is possible to alter the left/right convenience in theopening/closing of the net by reversing the wire screen main body in itsupside and downside without revering it in its front and back. And,since one end of the net guide 10 can be always connected to the lowerend of the first longitudinal frame member 2, it is possible to simplyalter the left/right convenience in the opening/closing of the lateralpull wire screen having the net guide.

1. A lateral pull wire screen comprising: a wire screen frame thatincludes a first longitudinal frame member fixed to a building openingpart in a longitudinal direction and a lateral frame member fixed to anupper part of the building opening part in a lateral direction; amovable frame of which an upper end is guided by the lateral framemember and is disposed so as to be laterally pulled; a net that isattached between the first longitudinal frame member and the movableframe and is openable and/or closeable by a lateral pull of the movableframe; and a net guide of which an end is detachably attached to thefirst longitudinal frame member, goes in and out to and from the insideof the movable frame while being bent in compliance with the openingand/or closing of the net caused by the lateral pull of the movableframe, and guides only a lower end of upper and lower ends of the netunder a stretched state, wherein the first longitudinal frame memberincludes a pair of caps that is attached to upper and lower ends of thefirst longitudinal frame member, respectively, and is formed in asubstantially symmetrical shape, each of the caps is provided with anattachment part that selectively attaches an end of the net guide to oneof the caps, the end of the net guide is attached to the attachment partof the only cap, which is disposed at the lower end of the firstlongitudinal frame member, of the caps, the movable frame includes aframe main body that is formed in a substantially symmetrical shape, andupper and lower frame caps that are attached to upper and lower ends ofthe frame main body so as to be replaceable with each other, the upperframe cap is provided with a guide mechanism that is guided by thelateral frame member, the lower frame cap is provided with a bend guidethat causes the net guide to go in and out to and from the inside of theframe main body while being bent, and left and/or right convenience in anet opening and/or closing can be altered by reversing the upside anddownside of a wire screen main body that includes the first longitudinalframe member, the movable frame, and the net; attaching the upper andlower frame caps to the frame main body so that the upper and lowerframe caps are replaced with each other; and attaching the end of thenet guide to the attachment part of the cap, which is disposed at thelower end of the first longitudinal frame member, of the pair of caps ofthe first longitudinal frame member.
 2. The lateral pull wire screenaccording to claim 1, wherein the wire screen frame includes a secondlongitudinal frame member that is fixed to the building opening part inthe longitudinal direction so as to face the first longitudinal framemember, and the second longitudinal frame member is formed in asubstantially symmetrical shape or symmetrical shape.
 3. The lateralpull wire screen according to claim 2, wherein the second longitudinalframe member is formed in a substantially symmetrical shape.
 4. Thelateral pull wire screen according to claim 2, wherein the lateral framemember forms the shape of a groove that is opened downward, the upperend of the movable frame is guided by the guide mechanism of the upperframe cap at the groove-shaped portion, upper ends of the first andsecond longitudinal frame members are connected to both ends of thelateral frame member, and the lateral frame member is formed in asubstantially symmetrical shape, or the first and second longitudinalframe members can be connected to the both ends of the lateral framemember so as to be replaced with each other.
 5. The lateral pull wirescreen according to claim 4, wherein the lateral frame member is formedin a substantially symmetrical shape.
 6. The lateral pull wire screenaccording to claim 1, wherein the net guide includes first and secondends at both ends in a longitudinal direction, and is formed in asubstantially symmetrical shape, the first end is detachably attached tothe first longitudinal frame member, and the second end goes in and outto and from the inside of the movable frame while being bent incompliance with the opening and/or closing of the net caused by thelateral pull of the movable frame.
 7. The lateral pull wire screenaccording to claim 6, wherein the net guide is constituted by connectingmany guide pieces made of a synthetic resin, which are formed inapproximately a U-shape by bottom parts along a lower end of the net andstanding wall parts which stand up along an outer face of the net. 8.The lateral pull wire screen according to claim 7, wherein theattachment parts, which are provided at the pair of caps of the firstlongitudinal frame member, respectively, include a pair of engagementpart pieces that is erected toward the net guide, and the first end ofthe net guide is detachably attached to the first longitudinal framemember by inserting the guide pieces, which are provided at the firstend of the net guide, between the pair of engagement part pieces so asto make the guide pieces disengagably engage with the engagement partpieces.
 9. The lateral pull wire screen according to claim 1, whereinthe first longitudinal frame member is constituted as a winding boxhaving a winding shaft which winds the net by a biasing force of aspring.
 10. The lateral pull wire screen according to claim 2, wherein alock receiver is fixed to the second longitudinal frame member so as tobe adjustable for upside and downside positions, the movable frame mainbody is provided with a lock mechanism including a lock part piece thatis provided so as to be slidable upward and/or downward andautomatically engages with the lock receiver when being butted againstthe second longitudinal frame member, and operation knobs that areconnected to the lock part piece so as to operate the lock part piece,and the lock part piece includes engagement parts, which engage with thelock receiver, at the upper and lower portions thereof.
 11. The lateralpull wire screen according to claim 10, wherein the lock part piece isformed in a substantially symmetrical shape.